FIRMWARE 2020.03 ver. 020004 DESCRYPTION:
MANUAL_BED_LEVEL_ONE_TEMP_SENSOR_2020_03_05 - Oryginal Temp Sensor Ender-3 100K
MANUAL_BED_LEVEL_TWO_TEMP_SENS_2020_03_05 - Two Temp Sensors in Heating Block - 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE"
A) One sensor working as a main temp sensor in heating block second one is working as a redudant if temp diff exceeds 10 C the print will be aborted  
PLEASE DON'T ASK ME FOR CONFIG FILES - THIS PROJECT IS FOR PEOPLE THAT HAVE NO PROGRAMMING SKILS !!!
ALL CONFIG FILES ARE THERE: https://github.com/bigtreetech/BIGTREETECH-SKR-V1.3
Creality Ender-3 with standard extruder plastic or aluminium version with stock (original) LCD. Mainboard SKR 1.3 with 2208 drivers.
DRIVERS 2208 in firmware are in UART MODE - One have to solder PINS.
Version 3 of 2208 BIGTREETECH drivers have 3 pins on back side just solder them.
DRIVERS 2208 IN THIS MAINBOARD WORKS WITH SOFTWARE SERIAL IF THEY ARE SET IN UART MODE NO NEED FOR ANY CABEL CONNECTION BETWEEN…

UNI 60mm/s @ 2000-2500mm/s2 JD 0.1 Filamentarno Total Pro GF-30